Air conditioner refrigerant leakage detection method

Abstract

The invention discloses an air conditioner refrigerant leakage detection method, which belongs to the technical field of air conditioners, and comprises the following steps: wind output by an air conditioner is introduced into a flow equalizing module to be segmented, and a light emitter and a first light receiver are respectively arranged in a flow dividing channel of the flow equalizing module; before the air conditioner is not started, after the light emitter is started for T1 time and the first light receiver receives light emitted by the light emitter, the first light receiver is synchronized to send a first signal to the controller, and the first illumination intensity A is calculated based on the first signal; after the air conditioner is stably started and runs, if the light emitter is started, if the first light receiver does not receive light after T1 time, it is indicated that the air conditioner has the refrigerant leakage problem; through the flow equalizing module, air output by the air conditioner and a medium can be uniformly mixed, so that the medium is more uniformly distributed, and later detection is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and in particular to a method for detecting leakage of refrigerant in an air conditioning system. Background Art

[0002] In the air-conditioning industry, flammable refrigerants are being used more and more widely, and their leakage safety issues are also receiving more and more attention.

[0003] Refrigerant leakage in air conditioning systems is one of the main causes of air conditioning performance degradation, increased energy consumption and environmental pollution. Traditional refrigerant leakage detection methods, such as visual leak detection, soap bubble test, gas differential pressure leak detection, electronic leak detection and fluorescence detection, can detect refrigerant leakage to a certain extent, but they have disadvantages such as low detection accuracy, complex operation and high cost. Summary of the invention

[0004] In order to solve the problems of the prior art, the present invention provides an air conditioning refrigerant leakage detection method, comprising the following steps:

[0005] Evenly distribute the air output from the air outlet of the air conditioner;

[0006] After starting the air conditioner, the wind output by the air conditioner is introduced into the input end of the flow balancing module, so that the medium contained in the wind output by the air conditioner is evenly dispersed in the flow balancing module;

[0007] Divide the wind flowing out of the current balancing module:

[0008] The output end of the flow balancing module is connected to the input end of the flow splitting module, and the flow splitting module is built with a plurality of flow splitting channels for splitting the wind entering the flow splitting module into a plurality of streams;

[0009] Detect the medium contained in the wind in the diversion channel;

[0010] A light transmitter and a first light receiver are respectively arranged on two opposite side walls in the diversion channel, the extension direction of the light emitted by the transmitter is perpendicular to the moving direction of the wind, and the first light receiver is connected to an external controller;

[0011] Before the air conditioner is started, after T1 time has passed since the light transmitter is turned on, the first light receiver receives the light emitted by the light transmitter, and the first light receiver is synchronized to send a first signal to the controller. After receiving the first signal, the controller calculates the first light intensity A based on the first signal.

[0012] After the air conditioner starts and runs stably, turn on the light transmitter. If the first light receiver does not receive light after T1 time, it means that there is a refrigerant leakage problem in the air conditioner;

[0013] Or, after T1 time, the first light receiver receives light and sends a second signal to the controller. After receiving the second signal, the controller calculates the second light intensity A based on the second signal. If the first light intensity A≠the second light intensity A, it indicates that there is a leakage of the air-conditioning refrigerant.

[0014] Furthermore, the current balancing module comprises: a current balancing channel, a current balancing plate and a spoiler;

[0015] When in use, one end of the flow balancing channel is connected to the air outlet of the air conditioner, and the other end of the flow balancing channel is connected to one end of the flow diversion module;

[0016] The spoiler and the flow equalizing plate are both arranged inside the flow equalizing channel, and the spoiler is arranged close to one end of the flow equalizing channel;

[0017] The peripheral side of the spoiler is sealed and connected to the inner wall of the flow balancing channel, and a plurality of fans are arranged on the spoiler;

[0018] The flow balancing plates are provided in plurality and are arranged at intervals between the spoiler and the other end of the flow balancing channel;

[0019] According to the direction of wind movement, the two sides and the top of the first flow equalizing plate are sealed with the inner wall of the flow equalizing channel, the two sides and the bottom of the second flow equalizing plate are sealed with the inner wall of the flow equalizing channel, and so on. The internal space of the flow equalizing channel is divided into continuous S-shaped channels by the flow equalizing plates.

[0020] Furthermore, a plurality of grooves of different depths and shapes are provided on the surface of the current equalizing plate.

[0021] Further, the flow splitter module at least includes: a first flow splitter, a second flow splitter and a third flow splitter;

[0022] The first flow divider, the second flow divider and the third flow divider are all rectangular structures with a hollow interior and openings at both ends;

[0023] The number of the diversion channels arranged inside the first diverter is at least 4, the number of the diversion channels arranged inside the second diverter is twice the number of the diversion channels arranged inside the first diverter, and the number of the diversion channels arranged inside the third diverter is twice the number of the diversion channels arranged inside the second diverter;

[0024] The size of a single flow diverter channel in the first flow diverter is twice the size of a single flow diverter channel in the second flow diverter, and the size of a single flow diverter channel in the second flow diverter is twice the size of a single flow diverter channel in the third flow diverter;

[0025] One end of the first diverter is connected to the other end of the current equalizing channel, the other end of the first diverter is connected to one end of the second diverter, the other end of the second diverter is connected to one end of the third diverter, and the optical transmitter and the first optical receiver are respectively arranged on the inner wall of the diverter channel in the third diverter in opposite positions.

[0026] Furthermore, a temperature probe is provided on the inner wall of the diversion channel in the second diverter, and the temperature probe is connected to the controller;

[0027] When obtaining the second light intensity A, the corresponding relevant light data is selected with reference to the data obtained by the temperature probe. The temperature data of each probe is obtained, the maximum and minimum values ​​in the temperature data are removed, and then the average value of the remaining temperature data is calculated to finally obtain the average temperature value. The shunt channels corresponding to at least 3 temperature data closest to the average temperature value are selected from the temperature data, and then the light data on the shunt channels on the third shunt corresponding to the selected three shunt channels are obtained. Then, the second light intensity A is calculated based on the selected light data, and then the second light intensity A is compared with the first light intensity A.

[0028] Further, a second light receiver is provided in the shunt channel on the third shunt, and the second light receiver is located on the inner wall of the flow passage between the first light receiver and the light transmitter. After the air conditioner is started and runs stably, after the light transmitter is started, after T1 time, when the first light receiver and the second light receiver receive light, they respectively send signals to the controller, and the controller respectively calculates the first light intensity B and the second light intensity B based on the signals sent by the first light receiver and the second light receiver;

[0029] If the first light intensity B=the first light intensity A, it means that there is no leakage of the air-conditioning refrigerant, otherwise there is leakage of the air-conditioning refrigerant; or, if the first light intensity B≤the second light intensity B, it means that there is leakage of the air-conditioning refrigerant.

[0030] Furthermore, if the air conditioner starts and runs stably, the light transmitter is started. When the second light receiver receives light, it synchronously sends a signal to the controller. The signal received by the controller is calculated to obtain the second light intensity C. If the second light intensity C≠the second light intensity B, it indicates that there is a refrigerant leakage problem in the air conditioner.

[0031] Furthermore, when selecting relevant lighting data based on the temperature probe data, after the air conditioner is started, the temperature of the air conditioner is set for the first time based on the current ambient temperature, so that the set temperature of the air conditioner is the same as the ambient temperature. This can avoid heat exchange with the external environment when the wind flows in the diversion module, causing excessive temperature changes, which increases the difficulty of selecting temperature data when making judgments based on the temperature data detected by the temperature probe, thereby affecting the selection of lighting data in the third diverter.

[0032] Furthermore, a temperature sensor and a temperature recognition area are provided in the current environment;

[0033] The temperature sensor is used to detect the temperature of the current environment and synchronously send a signal to the controller. The controller determines whether the current environment temperature is within the temperature identification zone within a set period based on the received signal;

[0034] The air conditioner is set to a second temperature in advance, and then the temperature sensor and the temperature recognition area are started to work, the second temperature setting of the air conditioner is set after the temperature data in the second diverter is collected, and the second temperature setting of the air conditioner and the temperature of the current environment retain a temperature interval, and the range of the temperature interval is the temperature range formed by the current environment temperature and the second temperature setting;

[0035] The temperature identification zone divides the temperature interval into a plurality of intervals, the intervals at least including a first temperature identification zone, a second temperature identification zone and a third temperature identification zone, and the absolute values ​​of the temperature ranges of the first temperature identification zone, the second temperature identification zone and the third temperature identification zone become smaller in sequence;

[0036] The first temperature recognition zone ranges from A°C to B°C, the second temperature recognition zone ranges from B°C to C°C, and the third temperature recognition zone ranges from C°C to D°C, A°C is the same as the current ambient temperature, and D°C is the same as the second temperature set for the air conditioner;

[0037] After the air conditioner is started after the second temperature setting, the sensor detects the current ambient temperature within the set period and sends the detection result to the controller. The controller calculates the current temperature and determines whether the current temperature is in the set temperature identification zone. If the current temperature falls into different temperature identification zones within the set period, it indicates that the air conditioner is operating normally. At the same time, the controller can reduce the output of the air conditioner according to the current ambient temperature.

[0038] Furthermore, the temperature sensor detects the current ambient temperature in real time, and controls the channel size of the shunt channel based on the ambient temperature controller. When the ambient temperature is close to the air-conditioning output temperature detected by the temperature probe, the channel size of the shunt channel is at the minimum.

[0039] Beneficial effects of the present invention:

[0040] The flow equalization module can be used to mix the medium in the wind output by the air conditioner, so that the medium is more evenly distributed, which is beneficial to the later detection. At the same time, a diversion channel is set in the flow equalization module to divide the wind into multiple streams, and each diversion channel is provided with a corresponding light transmitter and a light receiver, so that the light intensity in each diversion channel can be comprehensively detected, and then the relevant light data in the diversion channel with the smallest difference is selected, so that if there is a refrigerant leakage, the waves in the light will be refracted, thereby reducing the light intensity. By using this principle, it is possible to accurately determine whether the refrigerant of the air conditioner is leaking. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 A schematic diagram of the exploded structure of the current balancing module provided by the present invention;

[0042] Figure 2 A schematic diagram of the internal connection structure of the flow-equalizing channel provided by the present invention;

[0043] Figure 3 A schematic diagram of the connection structure of the optical receiver and the optical transmitter provided by the present invention;

[0044] Figure 4 This is a schematic diagram of the refrigerant leakage detection process provided by the present invention.

[0045] Reference numerals:

[0046] In the figure: 1 is a flow equalizing channel, 2 is a flow equalizing plate, 3 is a spoiler, 4 is a fan, 5 is a first diverter, 6 is a second diverter, 7 is a third diverter, 8 is a diverter channel, 9 is an optical transmitter, 10 is a first optical receiver, 11 is a second optical receiver, and 12 is a temperature probe. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0048] See also Figure 1-4 The present invention provides a method for detecting air conditioning refrigerant leakage, the method comprising the following steps:

[0049] Evenly distribute the air output from the air outlet of the air conditioner;

[0050] After starting the air conditioner, the wind output by the air conditioner is introduced into the input end of the flow balancing module, so that the medium contained in the wind output by the air conditioner is evenly dispersed in the flow balancing module;

[0051] Divide the wind flowing out of the current balancing module:

[0052] The output end of the flow balancing module is connected to the input end of the flow splitting module. The flow splitting module is equipped with a plurality of flow splitting channels 8 for splitting the wind entering the flow splitting module into a plurality of winds.

[0053] Detecting the medium contained in the wind in the diversion channel 8;

[0054] A light transmitter 9 and a first light receiver 10 are respectively arranged on opposite side walls in the shunt channel 8, the extension direction of the light emitted by the light transmitter 9 is perpendicular to the moving direction of the wind, and the first light receiver 10 is connected to an external controller; wherein the extension direction of the wind is parallel to the channel direction of the shunt channel, that is, the wind moves forward along the shunt channel, the first light receiver and the light transmitter are symmetrically arranged on the side walls of the shunt channel, and the extension direction of the light emitted by the light transmitter is perpendicular to the direction of the wind, and is also perpendicular to the extension direction of the shunt channel;

[0055] Before the air conditioner is started, after T1 time has passed since the light transmitter 9 is turned on, the first light receiver 10 receives the light emitted by the light transmitter 9, and the first light receiver 10 is synchronized to send a first signal to the controller. After receiving the first signal, the controller calculates the first light intensity A based on the first signal.

[0056] After the air conditioner starts and runs stably (at least half an hour), turn on the light transmitter 9. If the first light receiver 10 does not receive light after T1 time, it means that there is a refrigerant leakage problem in the air conditioner. If the first light receiver does not receive light, it proves that the refrigerant leakage is serious, and the refrigerant refracts the light to the maximum, so that the light cannot pass through the refrigerant and be received by the first light receiver. If the first light receiver can receive light, there are two situations, one is that the refrigerant leakage is not serious, and the other is that the refrigerant has not leaked, so it can be determined by comparing the light intensity. In addition, the first light receiver is mainly used to measure the intensity of the light emitted by the light transmitter. The first light receiver can directly use an existing light intensity measuring instrument or illuminance meter. This instrument is used to measure the intensity of the illumination light source. The light intensity radiated by the light source is captured by a photosensitive element and converted into an electrical signal for measurement. In the process of the light transmitter emitting light, the light will be diffusely reflected, but it will not affect the main propagation along a straight line to be received by the first light receiver.

[0057] Or, after T1 time, the first light receiver 10 receives light and sends a second signal to the controller. After receiving the second signal, the controller calculates the second light intensity A based on the second signal. If the first light intensity A≠the second light intensity A, it indicates that there is a leakage of the air-conditioning refrigerant.

[0058] Among them, by pre-calculating in normal state, when the light is transmitted to the first light receiver after the light transmitter is started, the first light receiver sends relevant data to the controller, and the controller calculates the reference light intensity (i.e., the first light intensity A), and compares the reference light intensity with the light intensity (i.e., the second light intensity A) calculated in real time after the air conditioner is turned on and running stably. If the second light intensity A>the first light intensity A, it proves that there is refrigerant in the wind output by the air conditioner. Due to the refrigerant refraction and reflection of light, the intensity of light transmitted to the first light receiver is weakened. In this way, it is possible to judge whether the refrigerant is leaking based on the change in light intensity.

[0059] In addition, in order to avoid uneven distribution caused by refrigerant leakage and affect detection, a flow equalization module is set to evenly distribute the medium (refrigerant) contained in the air output by the air conditioner, so that the refrigerant can be detected more accurately and easily in subsequent detection.

[0060] In some embodiments, the current balancing module includes: a current balancing channel 1, a current balancing plate 2 and a spoiler 3;

[0061] When in use, one end of the flow balancing channel 1 is connected to the air outlet of the air conditioner, and the other end of the flow balancing channel 1 is connected to one end of the flow diversion module;

[0062] The spoiler 3 and the flow equalizing plate 2 are both arranged inside the flow equalizing channel 1, and the spoiler 3 is arranged close to one end of the flow equalizing channel 1;

[0063] The surface of the current balancing plate 2 is provided with a plurality of grooves of different depths and shapes.

[0064] The peripheral side of the spoiler 3 is sealed and connected to the inner wall of the flow balancing channel 1, and a plurality of fans 4 are arranged on the spoiler 3;

[0065] The flow balancing plates 2 are provided in plurality and are arranged at intervals between the spoiler 3 and the other end of the flow balancing channel 1;

[0066] According to the direction of wind movement, the two sides and the top of the first flow equalizing plate 2 are sealed with the inner wall of the flow equalizing channel 1, the two sides and the bottom of the second flow equalizing plate 2 are sealed with the inner wall of the flow equalizing channel 1, and so on. The internal space of the flow equalizing channel 1 is divided into a continuous S-shaped channel by the flow equalizing plate 2.

[0067] Among them, the flow equalizing module has a uniform distribution effect on the medium contained in the wind output by the air conditioner. Specifically, when the wind flows out from the air outlet of the air conditioner, it is first concentrated on the front side of the spoiler, and then under the action of pressure, the wind drives the fan to rotate, and the wind enters the flow equalizing channel along the gap between the fan and the spoiler. Since a maze-like flow equalizing plate is arranged in the flow equalizing channel, the wind slows down under the action of the flow equalizing plate, and propels forward in a continuous S shape. During the propulsion process, since grooves of different depths and shapes are arranged on the flow equalizing plate, the direction of the wind can be changed at any time, and then under the action of the flow equalizing plate and the grooves, a stirring effect is performed on the medium in the wind, so that the medium is evenly distributed in the wind.

[0068] In some embodiments, the flow splitter module at least includes: a first flow splitter 5, a second flow splitter 6 and a third flow splitter 7;

[0069] The first flow divider 5, the second flow divider 6 and the third flow divider 7 are all in a rectangular structure with a hollow interior and openings at both ends;

[0070] The number of the diverter channels 8 provided in the first diverter 5 is at least 4, the number of the diverter channels 8 provided in the second diverter 6 is twice the number of the diverter channels 8 provided in the first diverter 5, and the number of the diverter channels 8 provided in the third diverter 7 is twice the number of the diverter channels 8 provided in the second diverter 6;

[0071] The size of a single diverter channel 8 in the first diverter 5 is twice the size of a single diverter channel 8 in the second diverter 6, and the size of a single diverter channel 8 in the second diverter 6 is twice the size of a single diverter channel 8 in the third diverter 7;

[0072] One end of the first diverter 5 is connected to the other end of the current equalizing channel 1, the other end of the first diverter 5 is connected to one end of the second diverter 6, the other end of the second diverter 6 is connected to one end of the third diverter 7, and the optical transmitter 9 and the first optical receiver 10 are respectively arranged on the inner wall of the diverter channel 8 in the third diverter 7 in opposite positions.

[0073] Among them, when the wind flows out from the equal flow channel, it is pushed forward in the form of a stream of wind. In order to more accurately detect whether there is refrigerant in the wind later, the wind is divided into multiple streams through the diversion module. Specifically, when the wind enters the first diverter, due to the effect of the diversion channel, the wind is divided into 4 streams of wind and pushed forward, and then enters the second diverter. Since the diversion channel in the second diverter is twice that in the first diverter, the wind is divided into 8 streams and pushed forward. At the same time, after entering the third diverter, the wind is divided into 16 streams. At this time, a light transmitter and a light receiver are provided in the diversion channel corresponding to each stream of wind. Therefore, the light intensity calculated when the wind passes through the 16 diversion channels can be obtained. Based on the light intensity, it can be compared with the first light intensity A to determine whether there is a refrigerant leakage.

[0074] The function of the diversion module is to divide the wind into multiple winds with smaller areas, thereby dividing the medium in the wind into multiple blocks. In this way, when calculating the light intensity later, multiple detection data can be obtained, so that more accurate data can be selected for calculating the light intensity. If the wind is not divided, there may be a large area of ​​wind. When passing through the light emitter, the area of ​​contact between the light and the medium in the wind is small, so the data obtained is inaccurate, and the amount of data obtained is too small to accurately judge the refrigerant leakage.

[0075] In some embodiments, a temperature probe 12 is disposed on the inner wall of the diversion channel 8 in the second diverter 6, and the temperature probe 12 is connected to the controller;

[0076] When obtaining the second light intensity A, the data obtained by the reference temperature probe 12 is used to select the corresponding related light data. The temperature data of each probe is obtained, the maximum and minimum values ​​in the temperature data are removed, and then the remaining temperature data are averaged to finally obtain the average temperature value. The diversion channels 8 corresponding to at least three temperature data closest to the average temperature value are selected from the temperature data, and then the light data on the diversion channels 8 on the third diverter 7 corresponding to the three selected diversion channels 8 are obtained. Then, the second light intensity A is calculated based on the selected light data, and then the second light intensity A is compared with the first light intensity A.

[0077] Among them, in order to accurately select the light data detected during the operation of the air conditioner, a temperature probe is set in the diverter channel of the second diverter. When the wind flows through the second diverter, the temperature probe obtains the temperature data in each diverter channel, and a diverter channel where each temperature data is located corresponds to two diverter channels on the third diverter. Therefore, the maximum temperature value and the minimum temperature value can be eliminated through the obtained temperature data, and the average value is calculated for the remaining temperature data. According to the average value, at least three diverter channels on the second diverter corresponding to the temperature data closest to it are selected, and the light data in the six diverter channels on the third diverter are obtained based on the selected three diverter channels on the second diverter. The light intensity is calculated based on the six light data. The six light data are screened by using the method of selecting temperature data, and the maximum and minimum values ​​are eliminated. Then, the average light intensity is calculated, and the average light intensity (i.e., the second light intensity A) is compared with the first light intensity A, so as to accurately determine whether the refrigerant is leaking.

[0078] In some embodiments, a second light receiver 11 is provided in the shunt channel 8 on the third shunt device 7, and the second light receiver 11 is located on the inner wall of the flow passage between the first light receiver 10 and the light transmitter 9. After the air conditioner is started and runs stably (at least half an hour), the light transmitter 9 is started, and after T1 time, when the first light receiver 10 and the second light receiver 11 receive light, they respectively send relevant signals to the controller, and the controller respectively calculates the first light intensity B and the second light intensity B based on the signals sent by the first light receiver 10 and the second light receiver 11;

[0079] If the first light intensity B = the first light intensity A, it means that there is no leakage of the air-conditioning refrigerant, otherwise there is leakage of the air-conditioning refrigerant; or, if the first light intensity B ≤ the second light intensity B, it means that there is leakage of the air-conditioning refrigerant;

[0080] If the air conditioner starts running stably (at least half an hour), after T1 time has passed, the light transmitter 9 is turned on, and after the second light receiver 11 receives the light, it synchronously sends a relevant signal to the controller. The controller calculates the second light intensity C based on the sent relevant signal. If the second light intensity C≠the second light intensity B, it indicates that there is a refrigerant leakage problem in the air conditioner.

[0081] Among them, when the leaked refrigerant is small, accurate judgment cannot be made by referring to the first light intensity and the second light intensity B. In order to increase the judgment accuracy, a second light receiver is set. Multi-path judgment based on the second light intensity B calculated by the second light receiver can more accurately determine whether a refrigerant leakage occurs.

[0082] When the refrigerant leakage is small, due to the errors between the components, the refrigerant leakage is small, and the light refracted by the refrigerant is small, so the deviation between the data received by the first light receiver and the data when the refrigerant is not leaking is small. If the deviation is within the error range of the component itself, it is not easy to determine the refrigerant leakage. At this time, the light refracted by the refrigerant can be calculated by the second light receiver, and the corresponding second light intensity C can be calculated. The second light intensity C is compared with the second light intensity B. At this time, the second light intensity B (equivalent to the benchmark light intensity) is used to accurately obtain the refrigerant leakage situation.

[0083] In some embodiments, when selecting relevant lighting data based on temperature probe data, after the air conditioner is started, a first temperature is set for the air conditioner based on the current ambient temperature so that the set temperature of the air conditioner is the same as the ambient temperature. This can avoid heat exchange with the external environment when the wind flows in the diversion module, causing excessive temperature changes, which increases the difficulty of selecting temperature data when making judgments based on the data detected by the temperature probe, thereby affecting the selection of lighting data in the third diverter.

[0084] In some embodiments, a temperature sensor and a temperature recognition area are provided in the current environment;

[0085] The temperature sensor is used to detect the temperature of the current environment and synchronously send a signal to the controller. The controller determines whether the current environment temperature is within the temperature identification zone within a set period based on the received signal;

[0086] The air conditioner is set to a second temperature in advance, and then the temperature sensor and the temperature recognition area are started to work, the second temperature setting of the air conditioner is set after the temperature data in the second diverter is collected, and the second temperature setting of the air conditioner and the temperature of the current environment retain a temperature interval, and the range of the temperature interval is the temperature range formed by the current environment temperature and the second temperature setting;

[0087] The temperature identification zone divides the temperature interval into a plurality of intervals, the intervals at least including a first temperature identification zone, a second temperature identification zone and a third temperature identification zone, and the absolute values ​​of the temperature ranges of the first temperature identification zone, the second temperature identification zone and the third temperature identification zone become smaller in sequence;

[0088] The first temperature identification zone ranges from A℃ to B℃, the second temperature identification zone ranges from B℃ to C℃, and the third temperature identification zone ranges from C℃ to D℃, wherein A℃ is the same as the current ambient temperature, and D℃ is the average temperature value of the temperature data in the second diverter acquired by the temperature probe; wherein, the significance of selecting the average temperature value for D℃ is that after the air conditioner has been running for a long time, with the aging of various components, the temperature set by the air conditioner is different from the actual output temperature, so in order to accurately divide the temperature identification zones, the average temperature value is selected for D℃;

[0089] After the air conditioner is started after the second temperature setting, the sensor detects the current ambient temperature within the set period and sends the detection result to the controller. The controller calculates the current temperature and determines whether the current temperature is in the set temperature identification zone. If the current temperature falls into different temperature identification zones within the set period, it indicates that the air conditioner is operating normally. At the same time, the controller can reduce the output of the air conditioner according to the current ambient temperature.

[0090] Among them, under normal air-conditioning conditions, at the same ambient temperature, after setting the same temperature as above, obtain the difference between the ambient temperature corresponding to each of T, 2T and 3T and the average temperature of the second temperature probe in the second diverter, by comparing the two differences under the normal air-conditioning state and the uncertain air-conditioning state, as well as the two times t when the ambient temperature is stable. If the first difference and the second difference are the same, and the first time t and the second time t are the same, then the air-conditioning refrigerant is not leaking, otherwise the air-conditioning is leaking.

[0091] Among them, when the air conditioner is in a normal state, the temperature of the air outlet of the air conditioner is the same as the temperature inside the diverter. However, when the state of the air conditioner is uncertain, if the temperature data is obtained from the air outlet of the air conditioner, there is a large difference in the temperature data obtained by adjacent temperature probes, which leads to inaccurate average temperature. When the temperature data is obtained from the second diverter, the wind in the first diverter and the second diverter evenly mixes the media in the diverter, and the temperature difference between adjacent temperature probes is smaller, and the actual average temperature obtained is more in line with the current output temperature of the air conditioner.

[0092] In some embodiments, the temperature sensor detects the current ambient temperature in real time, and controls the channel size of the diversion channel based on the ambient temperature controller. When the ambient temperature is close to the air-conditioning output temperature detected by the temperature probe, the channel size of the diversion channel is at its minimum.

[0093] Among them, the size change of the diversion channel can be achieved by arranging blades in the diversion channel, specifically, by arranging a rotating shaft in the diversion channel, the blades are fixedly connected to the rotating shaft, the two ends of the rotating shaft are arranged through the diverter, and gears are arranged on the rotating shaft outside the diverter. The gears are meshed with racks, and the racks are connected to the output end of the electric telescopic rod, the electric telescopic rod is connected to the outer wall of the diverter, and the electric telescopic rod is connected to the controller. The movement of the electric telescopic rod can be controlled by the controller, thereby controlling the rotation of the blades, wherein the rotating shaft is located on the first diverter.

[0094] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for detecting leakage of air conditioner refrigerant, characterized in that: The following steps are involved: Evenly distribute the air output from the air outlet of the air conditioner; After starting the air conditioner, the wind output by the air conditioner is introduced into the input end of the flow balancing module, so that the medium contained in the wind output by the air conditioner is evenly dispersed in the flow balancing module; Divide the wind flowing out of the current balancing module: The output end of the flow balancing module is connected to the input end of the flow splitting module, and the flow splitting module is built with a plurality of flow splitting channels for splitting the wind entering the flow splitting module into a plurality of streams; Detect the medium contained in the wind in the diversion channel; A light transmitter and a first light receiver are respectively arranged on two opposite side walls in the diversion channel, the extension direction of the light emitted by the transmitter is perpendicular to the moving direction of the wind, and the first light receiver is connected to an external controller; Before the air conditioner is started, after T1 time has passed since the light transmitter is turned on, the first light receiver receives the light emitted by the light transmitter, and the first light receiver is synchronized to send a first signal to the controller. After receiving the first signal, the controller calculates the first light intensity A based on the first signal. After the air conditioner starts and runs stably, turn on the light transmitter. If the first light receiver does not receive light after T1 time, it means that there is a refrigerant leakage problem in the air conditioner; Or, after T1 time, the first light receiver receives light and sends a second signal to the controller. After receiving the second signal, the controller calculates the second light intensity A based on the second signal. If the first light intensity A≠the second light intensity A, it indicates that there is a leakage of the air-conditioning refrigerant.

2. The air conditioning refrigerant leakage detection method according to claim 1, characterized in that: The current balancing module comprises: a current balancing channel, a current balancing plate and a spoiler; When in use, one end of the flow balancing channel is connected to the air outlet of the air conditioner, and the other end of the flow balancing channel is connected to one end of the flow diversion module; The spoiler and the flow equalizing plate are both arranged inside the flow equalizing channel, and the spoiler is arranged close to one end of the flow equalizing channel; The peripheral side of the spoiler is sealed and connected to the inner wall of the flow balancing channel, and a plurality of fans are arranged on the spoiler; The flow balancing plates are provided in plurality and are arranged at intervals between the spoiler and the other end of the flow balancing channel; According to the direction of wind movement, the two sides and the top of the first flow equalizing plate are sealed with the inner wall of the flow equalizing channel, the two sides and the bottom of the second flow equalizing plate are sealed with the inner wall of the flow equalizing channel, and so on. The internal space of the flow equalizing channel is divided into continuous S-shaped channels by the flow equalizing plates.

3. The air conditioning refrigerant leakage detection method according to claim 2, characterized in that: The surface of the flow equalizing plate is provided with a plurality of grooves of different depths and shapes.

4. The air conditioning refrigerant leakage detection method according to claim 2, characterized in that: The flow splitter module at least comprises: a first flow splitter, a second flow splitter and a third flow splitter; The first flow divider, the second flow divider and the third flow divider are all rectangular structures with a hollow interior and openings at both ends; The number of the diversion channels arranged inside the first diverter is at least 4, the number of the diversion channels arranged inside the second diverter is twice the number of the diversion channels arranged inside the first diverter, and the number of the diversion channels arranged inside the third diverter is twice the number of the diversion channels arranged inside the second diverter; The size of a single flow diverter channel in the first flow diverter is twice the size of a single flow diverter channel in the second flow diverter, and the size of a single flow diverter channel in the second flow diverter is twice the size of a single flow diverter channel in the third flow diverter; One end of the first diverter is connected to the other end of the current equalizing channel, the other end of the first diverter is connected to one end of the second diverter, the other end of the second diverter is connected to one end of the third diverter, and the optical transmitter and the first optical receiver are respectively arranged on the inner wall of the diverter channel in the third diverter in opposite positions.

5. The air conditioning refrigerant leakage detection method according to claim 4, characterized in that: The inner wall of the diversion channel in the second diverter is provided with a temperature probe, and the temperature probe is connected to the controller; When obtaining the second light intensity A, the corresponding relevant light data is selected with reference to the data obtained by the temperature probe. The temperature data of each probe is obtained, the maximum and minimum values ​​in the temperature data are removed, and then the average value of the remaining temperature data is calculated to finally obtain the average temperature value. The shunt channels corresponding to at least 3 temperature data closest to the average temperature value are selected from the temperature data, and then the light data on the shunt channels on the third shunt corresponding to the selected three shunt channels are obtained. Then, the second light intensity A is calculated based on the selected light data, and then the second light intensity A is compared with the first light intensity A.

6. The air conditioning refrigerant leakage detection method according to claim 5, characterized in that: A second light receiver is provided in the flow dividing channel on the third flow divider, and the second light receiver is located on the inner wall of the flow channel between the first light receiver and the light transmitter. After the air conditioner is started and runs stably, the light transmitter is started, and after T1 time, when the first light receiver and the second light receiver receive light, they respectively send signals to the controller, and the controller respectively calculates the first light intensity B and the second light intensity B based on the signals sent by the first light receiver and the second light receiver; If the first light intensity B=the first light intensity A, it means that there is no leakage of the air-conditioning refrigerant, otherwise there is leakage of the air-conditioning refrigerant; or, if the first light intensity B≤the second light intensity B, it means that there is leakage of the air-conditioning refrigerant.

7. The air conditioning refrigerant leakage detection method according to claim 6, characterized in that: If the air conditioner starts and runs stably, start the light transmitter. When the second light receiver receives light, it synchronously sends a signal to the controller. The signal received by the controller is calculated to obtain the second light intensity C. If the second light intensity C≠the second light intensity B, it indicates that there is a refrigerant leakage problem in the air conditioner.

8. The air conditioning refrigerant leakage detection method according to claim 5, characterized in that: When selecting relevant lighting data based on the temperature probe data, after the air conditioner is started, the air conditioner is set to the first temperature based on the current ambient temperature so that the set temperature of the air conditioner is the same as the ambient temperature. This can avoid heat exchange with the external environment when the wind flows in the diversion module, causing excessive temperature changes, which increases the difficulty of selecting temperature data when making judgments based on the temperature data detected by the temperature probe, thereby affecting the selection of lighting data in the third diverter.

9. The air conditioning refrigerant leakage detection method according to claim 8, characterized in that: The current environment is provided with a temperature sensor and a temperature identification area; The temperature sensor is used to detect the temperature of the current environment and synchronously send a signal to the controller. The controller determines whether the current environment temperature is within the temperature identification zone within a set period based on the received signal; The air conditioner is set to a second temperature in advance, and then the temperature sensor and the temperature recognition area are started to work. The second temperature setting of the air conditioner is set after the temperature data in the second diverter is collected. The second temperature setting of the air conditioner and the temperature of the current environment retain a temperature interval, and the range of the temperature interval is the temperature range formed by the current environment temperature and the second temperature setting; The temperature identification zone divides the temperature interval into a plurality of intervals, the intervals at least including a first temperature identification zone, a second temperature identification zone and a third temperature identification zone, and the absolute values ​​of the temperature ranges of the first temperature identification zone, the second temperature identification zone and the third temperature identification zone become smaller in sequence; The first temperature recognition zone ranges from A°C to B°C, the second temperature recognition zone ranges from B°C to C°C, and the third temperature recognition zone ranges from C°C to D°C, A°C is the same as the current ambient temperature, and D°C is the same as the second temperature set for the air conditioner; After the air conditioner is started after the second temperature setting, the sensor detects the current ambient temperature within the set period and sends the detection result to the controller. The controller calculates the current temperature and determines whether the current temperature is in the set temperature identification zone. If the current temperature falls into different temperature identification zones within the set period, it indicates that the air conditioner is operating normally. At the same time, the controller can reduce the output of the air conditioner according to the current ambient temperature.

10. The air conditioning refrigerant leakage detection method according to claim 9, characterized in that: The temperature sensor detects the current ambient temperature in real time, and controls the channel size of the shunt channel based on the ambient temperature controller. When the ambient temperature is close to the air conditioner output temperature detected by the temperature probe, the channel size of the shunt channel is at the minimum.

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